Suggestions from danblack

1. 'set print frame-arguments all' to a global gdb config file to ensure that structures are expanded in gdb backtraces rather than showing as ... (tip thanks to marko)

2. export UBSAN_OPTIONS=print_stacktrace=1 as global env variable so UBSAN builds have a complete BT of their failures in the mysql error log like MDEV-22387. I haven't seen a UBSAN based build but it will be useful for when one is made